Support frame for a display carton



FIG. 1 is a top, front and left side perspective view of a support frame for a display carton showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof; and

FIG. 4 is a right side elevational view thereof. 

The ornamental design for a support frame for a display carton, as shown. 